What ends up happening is that small bets are usually either ~same ev as check back or even higher and it results in a strategy that is:Ģ. As the opponent it's usually difficult for most players to properly construct their raise and calling ranges in a way that makes that true. your bet such that your weaker hands have equal EV to checking behind which usually involves a good amount of calling and a good amount of raising. In equilibrium the opponent is supposed to be constructing his range vs. In a situation where you're HU and against a player that called either out of the big blind or vs a 3b in the vast majority of spots all your hands can bet and be +EV. As your bet sizing also decreases your opponent also needs to call and raise more which people don't typically do very well. You can also think of it as your sizing goes down you're essentially widening your value range-this incorporates more value hands and also more bluffs/equity denial type hands. As sizing decreases you typically can increase your frequency. First off, many sizings and strategies are viable, but the key thing to note is that sizings will directly influence frequencies.